pmg/docs/github-action.md

PMG GitHub Action

Install PMG in a Linux GitHub Actions runner and transparently wrap every subsequent npm install, pip install, poetry add, etc. so malicious packages are blocked before they execute.

- uses: safedep/pmg@v1

That's it. Out of the box you get:

• malware blocking against SafeDep's real-time threat intelligence
• a 5-day dependency cooldown (blocks freshly-published versions)
• proxy-based interception of npm/pip/pnpm/yarn/bun/poetry/uv/uvx/npx/pnpx

Quick start

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: actions/setup-node@v4
        with:
          node-version: 24
      - uses: safedep/pmg@v1
      - run: npm ci

Order matters. Put safedep/pmg after setup-node / setup-python / etc. Each step that writes to GITHUB_PATH prepends to PATH, and PMG needs its shims ($HOME/.pmg/bin/{npm,pip,...}) to land in front of the real toolchains.

Inputs

All toggle inputs default to empty. When empty, the action emits no PMG_* env var for that key and PMG's own defaults apply — so a YAML loaded via config-file is never silently shadowed. Set an input explicitly to override.

Input	Effect when set	PMG default if empty
version	PMG release tag (e.g. v0.42.0) or latest	latest
api-key	SafeDep Cloud API key. Set together with tenant-id; mask with a secret	unset (cloud sync disabled)
tenant-id	SafeDep Cloud tenant ID	unset
endpoint-id	Reported to SafeDep Cloud as the "machine" identifier	github-actions/<owner>/<repo> when cloud is enabled
paranoid	PMG_PARANOID	false
cooldown-enabled	PMG_DEPENDENCY_COOLDOWN_ENABLED	true
cooldown-days	PMG_DEPENDENCY_COOLDOWN_DAYS	5
proxy-mode	REMOVED. Proxy interception can no longer be disabled; "false" fails the action, other values warn and are ignored	unset
sandbox	PMG_SANDBOX_ENABLED. Also relaxes AppArmor user-ns restrictions on the runner	false
sandbox-driver	PMG_SANDBOX_DRIVER — landlock or bubblewrap	landlock when sandbox is enabled
verbosity	PMG_VERBOSITY — silent, normal, or verbose	normal
disable-telemetry	PMG_DISABLE_TELEMETRY	false
skip-event-logging	PMG_SKIP_EVENT_LOGGING	false
config-file	Path to a YAML file in the repo. Copied to PMG's config dir before setup so you can override any config key	unset
cache	Reuse a previously-extracted PMG binary from $RUNNER_TOOL_CACHE. On cache hit, the cached tarball is re-verified against checksums.txt fetched from upstream every run	false (fresh download per run)

Outputs

Output	Description
version	The resolved PMG version that was installed.
bin-dir	Directory containing the pmg binary on this runner.

Recipes

Send audit events to SafeDep Cloud

- uses: safedep/pmg@v1
  with:
    api-key:   ${{ secrets.SAFEDEP_API_KEY }}
    tenant-id: ${{ secrets.SAFEDEP_TENANT_ID }}
- run: npm ci
# At the end of the job, flush events to SafeDep Cloud.
- run: pmg cloud sync --timeout 60s
  if: always()

Why the explicit sync step? Composite actions don't have a clean post-step hook today. A single trailing step (if: always()) keeps everything visible in your workflow file.

The endpoint-id defaults to github-actions/${{ github.repository }} so every workflow on the same repo appears as one endpoint in the SafeDep Cloud UI. Override it for per-environment splits:

- uses: safedep/pmg@v1
  with:
    api-key:     ${{ secrets.SAFEDEP_API_KEY }}
    tenant-id:   ${{ secrets.SAFEDEP_TENANT_ID }}
    endpoint-id: github-actions/${{ github.repository }}/prod

Custom configuration via config-file

# .github/pmg.yml — pinned in the repo
paranoid: true
dependency_cooldown:
  enabled: true
  days: 14
trusted_packages:
  - purl: pkg:npm/@my-org/internal-pkg
    reason: "Internal package, signed by build pipeline"

- uses: safedep/pmg@v1
  with:
    config-file: .github/pmg.yml

The file is copied into ~/.config/safedep/pmg/config.yml before pmg setup install runs. PMG merges any missing template keys into it, so you only need to specify what you want to override.

Sandbox mode

- uses: safedep/pmg@v1
  with:
    sandbox: true
    sandbox-driver: landlock   # or "bubblewrap"
- run: npm ci

The action will systemctl stop apparmor and clear kernel.apparmor_restrict_unprivileged_userns so unprivileged user namespaces work. This mutates the runner — only enable when you actually need install-script containment.

Setting arbitrary PMG_* env vars

Any PMG config key can be overridden via a PMG_* env var without an action input. Set it on the job or the install step:

- uses: safedep/pmg@v1
- run: npm ci
  env:
    PMG_DEPENDENCY_COOLDOWN_DAYS: 10

See docs/config.md for the full mapping.

Platform support

Runner	Supported
ubuntu-latest, ubuntu-24.04, ubuntu-22.04 (x86_64 + arm64)	Yes
macos-*	No (fail fast)
windows-*	No (fail fast)

macOS and Windows runners are tracked in issue #248.